Enamel can refer to a couple of things. When you
say enamel, you might be talking about tooth
enamel, which is the white, visible part of our
teeth. Tooth enamel is made out of different
kinds of mineral, some organic materials (carbon-
containing compounds), and water. But you might
also be talking about "vitreous enamel" which is
used to coat the surfaces of metals and
ceramics. Vitreous enamel is made by melting
glass over the surface of the object you're
trying to coat. It is smooth and often looks
somewhat shiny.

Answer 2:

Enamel is the hard material that coats your
teeth, and is made mostly of a mineral. In other
words, the coating of your teeth is made of
rock! This outer enamel layer is hard, but
fairly brittle (it can break easily), so beneath
the coating most of your tooth is made of
dentin, which is softer.

However, we call other things enamel. There's
enamel paint, which is totally different, and
there's also porcelain enamel, which is used to
make a lot of dishes. Enamel paint is usually
any paint that gives a glossy (shiny) finish and
is fairly durable, so you'll often see it used
for painting floors. Porcelain enamel is just a
bunch of powdered glass that's squished together
and then melted to make a durable (glass)
coating.

Answer 3:

Enamel is a layer of hard mineral that covers
the outsides of our teeth and protects them from
damage from what we are eating, as well as from
bacteria or other disease-causing things.